CN103778881A - Data driving circuit, display device and driving method thereof - Google Patents
Data driving circuit, display device and driving method thereof Download PDFInfo
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- CN103778881A CN103778881A CN201410041066.5A CN201410041066A CN103778881A CN 103778881 A CN103778881 A CN 103778881A CN 201410041066 A CN201410041066 A CN 201410041066A CN 103778881 A CN103778881 A CN 103778881A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3614—Control of polarity reversal in general
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0404—Matrix technologies
- G09G2300/0408—Integration of the drivers onto the display substrate
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0275—Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/08—Details of timing specific for flat panels, other than clock recovery
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2370/00—Aspects of data communication
- G09G2370/14—Use of low voltage differential signaling [LVDS] for display data communication
Abstract
The invention provides a data driving circuit, a display device and a driving method thereof, and relates to the technical field of display, wherein the data driving circuit, the display device and the driving method thereof solve the problem that the number of control ends of an existing data driving integrated circuit is large. According to the data driving circuit, each driving unit comprises a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, two data control ends, a first conversion control end and a second conversion control end, wherein each switch unit comprises a first input end, a second input end and an output end; one data control end is respectively connected with the first input end of the corresponding first switch unit and the first input end of the corresponding second switch unit, and the other data control end is respectively connected with the first input end of the corresponding third switch unit and the first input end of the corresponding fourth switch unit; the first conversion control end is connected with the second input end of one of the switch units connected with the same data control end; the second conversion control end is connected with the second input end of the other one of the switch units connected with the dame data control end; the output ends of the switch units are output ends of the driving circuit.
Description
Technical field
The present invention relates to display technique field, relate in particular to a kind of data drive circuit, display device and driving method thereof.
Background technology
Shown in Fig. 1 is the planimetric map of pixel cell on the array base palte of TFS (New ADS, new ADS) pattern, the simplification view that Fig. 2 is Fig. 1.As shown in Figure 1 and Figure 2, on array base palte, grid line and data line are arranged in a crossed manner, and wherein a grid line (Sn) and two data lines (M1 in figure and M2 or M3 and M4) are that 1G2D structure forms a pixel subelement.
Existing type of drive be data-driven IC respectively to two of a pixel subelement according to line provide that electric weight equates, opposite polarity data-signal to be to drive pixel electrode to show.Existing data-driven IC as shown in Figure 3, comprise multiple control ends 10, each control end 10 provides data-signal to corresponding data line (M1, M2, M3, M4...Mn, Mn+1), therefore the control end quantity that data-driven IC comprises is large, is unfavorable for that the miniaturization of display device and equipment cost are high.
Summary of the invention
Embodiments of the invention provide a kind of data drive circuit, display device and driving method thereof, and described driving circuit can the corresponding quantity that reduces drive IC control end.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The embodiment of the present invention provides a kind of data drive circuit, comprises multiple driver elements, and wherein each driver element comprises:
The first switch element, second switch unit, the 3rd switch element and the 4th switch element; Wherein, each switch element comprises respectively first input end, the second input end and output terminal;
Two data control ends, described in one of them, Data Control end is connected with the first input end of second switch unit with the first switch element respectively, and described in another, Data Control end is connected with the first input end of the 4th switch element with the 3rd switch element respectively;
The first conversion and control end, is connected with the second input end of one of them switch element being connected with same Data Control end;
The second conversion and control end, is connected with the second input end of another switch element being connected with same Data Control end;
The output terminal of each switch element is the output terminal of described driving circuit.
Optionally, described the first switch element, second switch unit, the 3rd switch element and the 4th switch element are thin film transistor (TFT).
The data-signal of optionally, connected with the first conversion and control end switch element output is contrary with the electric weight phase isopolarity of the data-signal of the switch element output being connected with the second conversion and control end.
Optionally, described second switch unit is adjacent with described the 3rd switch element, and second switch unit is all connected with the first conversion and control end or the second conversion and control end with the 3rd switch element.
Optionally, described second switch unit is adjacent with described the 3rd switch element, and second switch unit is connected with the second conversion and control end with the first conversion and control end respectively with the 3rd switch element.
The embodiment of the present invention provides a kind of display device, it is characterized in that, comprise arbitrary described data drive circuit that array base palte and the embodiment of the present invention provide, many grid lines and many data lines arranged in a crossed manner on described array base palte form multiple pixel subelements, wherein, a corresponding grid line of pixel subelement and two data lines; The output terminal of four switch elements of described data drive circuit is connected with four data lines of two pixel cells adjacent on array base palte respectively, and the output terminal of two switch elements that are connected with same Data Control end is connected with two data lines in a pixel subelement on array base palte respectively, provides data-signal to described data line.
Optionally, described display device also comprises: time schedule controller, described time schedule controller provides the polarity control signal of data-signal to data drive circuit.
The embodiment of the present invention provides a kind of driving method of display device, comprising:
Data Control end provides driving signal to coupled switch element;
The first conversion and control end provides start signal to coupled switch element, provides data-signal with the output terminal that makes described switch element to coupled data line;
The second conversion and control end provides start signal to coupled switch element, provides data-signal with the output terminal that makes described switch element to coupled data line.
Optionally, the first conversion and control end provides start signal and the second conversion and control end to provide the electric weight phase isopolarity of start signal contrary, to make the data-signal of the switch element output connected with the first conversion and control end contrary with the electric weight phase isopolarity of the data-signal of the switch element output being connected with the second conversion and control end.
Optionally, time schedule controller provides the polarity control signal of data-signal to data drive circuit.
Embodiments of the invention provide a kind of data drive circuit, display device and driving method thereof, a data control end of described data drive circuit is connected with the first input end of two switch elements respectively, the first conversion and control end, is connected with the second input end of described one of them switch element; The second conversion and control end, is connected with the second input end of described another switch element; Can make two data-signals of data control end output by controlling the first conversion and control end and the second conversion and control end, reduce the quantity of Data Control end, be conducive to data-driven IC miniaturization, reduced production cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the pixel cell planimetric map of the array base palte of existing TFS pattern;
Fig. 2 is the simplification view of the pixel cell shown in Fig. 1;
Fig. 3 is the data-driven IC schematic diagram on the array base palte of existing TFS pattern;
A kind of data drive circuit schematic diagram that Fig. 4 provides for the embodiment of the present invention;
The another kind of data drive circuit schematic diagram that Fig. 5 provides for the embodiment of the present invention;
The driving method schematic diagram of a kind of array base palte that Fig. 6 provides for the embodiment of the present invention;
The driving method schematic diagram of the another kind of array base palte that Fig. 7 provides for the embodiment of the present invention.
Reference numeral:
10-Data Control end; 101-the first film transistor; 201-the second thin film transistor (TFT); 301-the 3rd thin film transistor (TFT); 401-the 4th thin film transistor (TFT); 21-the first conversion and control end; 22-the second conversion and control end.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of data drive circuit, comprising: comprise multiple driver elements, wherein each driver element comprises:
The first switch element, second switch unit, the 3rd switch element and the 4th switch element; Wherein, each switch element comprises respectively first input end, the second input end and output terminal;
Two data control ends, described in one of them, Data Control end is connected with the first input end of second switch unit with the first switch element respectively, and described in another, Data Control end is connected with the first input end of the 4th switch element with the 3rd switch element respectively;
The first conversion and control end, is connected with the second input end of one of them switch element being connected with same Data Control end;
The second conversion and control end, is connected with the second input end of another switch element being connected with same Data Control end;
The output terminal of each switch element is the output terminal of described driving circuit.
It should be noted that, described switch element can be any switch with first input end, the second input end and output terminal, in the embodiment of the present invention take described switch element as thin film transistor (TFT) as example is elaborated.The driving circuit that the embodiment of the present invention provides can be used for the data-driven IC of array base palte, and the output terminal of described driving circuit and the data line of array base palte are connected, and provide data-signal to data line.The data drive circuit that the embodiment of the present invention provides comprises multiple driver elements, each driver element comprises the first switch element, second switch unit, the 3rd switch element and the 4th switch element, each driver element comprises four output terminals, provides data-signal respectively to data line.Can be wherein that two data lines that are connected with Data Control end provide data-signal with two data lines of a sub-pixel respectively.
Concrete, as shown in Figure 4, be elaborated as example take corresponding M1, M2, M3, tetra-data lines of M4 of driving of data drive circuit, the connected mode of other data lines can be with reference to the connected mode shown in figure 4.Data drive circuit shown in Fig. 4 comprises two data control ends 10, one of them Data Control end 10 is connected with the first input end of the first film transistor 101 and the first input end of the second thin film transistor (TFT) 201 respectively, and another Data Control end 10 is connected with the first input end of the 3rd thin film transistor (TFT) 301 and the 4th thin film transistor (TFT) 401 respectively.The first conversion and control end 21 is connected with the second input end of the 4th thin film transistor (TFT) 401 with the first film transistor 101 respectively, and the second conversion and control end 22 is connected with the first input end of the 3rd thin film transistor (TFT) 301 with the second thin film transistor (TFT) 201.In the time that Data Control end 10 provides data-signal to the first film transistor 101 and the second thin film transistor (TFT) 201 simultaneously, when the first conversion and control end 21 provides start signal to the first film transistor 101, the first film transistor 101 is opened, and to data line, M1 provides data-signal; When the second conversion and control end 22 provides start signal to the second thin film transistor (TFT) 201, the second thin film transistor (TFT) 201 is opened, and to data line, M2 provides data-signal.In like manner, in the time that Data Control end 10 provides data-signal to the 3rd thin film transistor (TFT) 301 and the 4th thin film transistor (TFT) 401 simultaneously, when the first conversion and control end 21 provides start signal to the 4th thin film transistor (TFT) 401, the 4th thin film transistor (TFT) 401 is opened, and to data line, M4 provides data-signal; When the second conversion and control end 22 provides start signal to the 3rd thin film transistor (TFT) 301, the 3rd thin film transistor (TFT) 301 is opened, and to data line, M3 provides data-signal.When data circuit comprises multiple driver elements, it provides data-signal with reference to aforesaid way to corresponding data line.
It should be noted that, it in the embodiment of the present invention, is example take described switch element as thin film transistor (TFT), thin film transistor (TFT) generally comprises grid, source electrode and drain electrode, the end of Data Control described in the embodiment of the present invention is connected with the source class (first input end) of thin film transistor (TFT), the first conversion and control end or the second conversion and control end are connected with the grid (the second input end) of thin film transistor (TFT), and drain electrode is the output terminal of thin film transistor (TFT).Or, when described Data Control end is connected with the drain electrode (first input end) of thin film transistor (TFT), the first conversion and control end or the second conversion and control end are connected with the grid (the second input end) of thin film transistor (TFT), the output terminal that source electrode is thin film transistor (TFT).
A kind of data drive circuit that the embodiment of the present invention provides, each driver element comprises: the first switch element, second switch unit, the 3rd switch element and the 4th switch element; Wherein, each switch element comprises respectively first input end, the second input end and output terminal; Two data control ends, described in one of them, Data Control end is connected with the first input end of second switch unit with the first switch element respectively, and described in another, Data Control end is connected with the first input end of the 4th switch element with the 3rd switch element respectively; The first conversion and control end, is connected with the second input end of one of them switch element being connected with same Data Control end; The second conversion and control end, is connected with the second input end of another switch element being connected with same Data Control end; The output terminal of each switch element is the output terminal of described driving circuit; The output terminal of two switch elements that described and same Data Control end is connected can be to be connected with two data lines of a pixel subelement on array base palte respectively, provides data-signal to described data line.In the time that Data Control end provides data-signal to the first input end of two coupled switch elements, if the first conversion and control end to coupled switch element the second input end start signal is provided, driving circuit can provide data-signal to the wherein data line in a pixel subelement; If the second conversion and control end to coupled switch element the second input end start signal is provided, driving circuit can provide data-signal to another data line in described pixel subelement.Can provide data-signal to two data lines respectively by a data control end like this, reduce the quantity of Data Control end, be conducive to data-driven IC miniaturization, reduced production cost.
It should be noted that, the data drive circuit that the embodiment of the present invention provides can provide respectively opposite polarity data-signal to two of a same pixel subelement data line by a data control end, and the data-signal that polarity is identical also can be provided.
The data-signal of optionally, connected with the first conversion and control end switch element output is contrary with the electric weight phase isopolarity of the data-signal of the switch element output being connected with the second conversion and control end.
Concrete, as shown in Figure 4, the data-signal that the first film transistor 101 connected with the first conversion and control end 21 exported is contrary with the electric weight phase isopolarity of the data-signal that the second thin film transistor (TFT) 201 being connected with the second conversion and control end 22 is exported.The electric weight phase isopolarity of the data-signal that the data-signal that the 4th thin film transistor (TFT) 401 being connected with the first conversion and control end 21 is exported is exported with the 3rd thin film transistor (TFT) 301 being connected with the second conversion and control end 22 is contrary.
Optionally, described second switch unit is adjacent with described the 3rd switch element, and second switch unit is all connected with the first conversion and control end or the second conversion and control end with the 3rd switch element.As shown in Figure 4, the second thin film transistor (TFT) 201 is adjacent with the 3rd thin film transistor (TFT) 301, and the second thin film transistor (TFT) 201 is all connected with the second conversion and control end 22 with the 3rd thin film transistor (TFT) 301.The electric weight phase isopolarity of the data-signal that the second thin film transistor (TFT) 201 is exported with the 3rd thin film transistor (TFT) 301 is identical.Certainly, the second thin film transistor (TFT) 201 can also be to be all connected with the first conversion and control end 21 with the 3rd thin film transistor (TFT) 301, is only depicted as example with accompanying drawing and is elaborated in the present invention.
Optionally, described second switch unit is adjacent with described the 3rd switch element, and second switch unit is connected with the second conversion and control end with the first conversion and control end respectively with the 3rd switch element.As shown in Figure 5, the second thin film transistor (TFT) 201 is adjacent with the 3rd thin film transistor (TFT) 301, and the second thin film transistor (TFT) 201 is connected with the second conversion and control end 22 with the first conversion and control end 21 respectively with the 3rd thin film transistor (TFT) 301, and the polarity of the data-signal that the second thin film transistor (TFT) 201 and the 3rd thin film transistor (TFT) 301 are exported is contrary.Concrete, in Fig. 5, being connected with the second conversion and control end 22 with the second thin film transistor (TFT) 201, the 3rd thin film transistor (TFT) 301 and the first conversion and control end 21 are connected to example to carry out.Certainly, the second thin film transistor (TFT) 201 can also be to be connected with the first conversion and control end 21, and the 3rd thin film transistor (TFT) 301 is connected with the second conversion and control end 22.Now, the first film transistor 101 is connected with the second conversion and control end 22, and the 4th thin film transistor (TFT) 401 is connected with the first conversion and control end 21.
The embodiment of the present invention provides a kind of display device, comprise the data drive circuit described in any one that array base palte and the embodiment of the present invention provide, many grid lines and many data lines arranged in a crossed manner on described array base palte form multiple pixel subelements, wherein, a corresponding grid line of pixel subelement and two data lines; The output terminal of four switch elements of described data drive circuit is connected with four data lines of two pixel cells adjacent on array base palte respectively, and the output terminal of two switch elements that are connected with same Data Control end is connected with two data lines in a pixel subelement on array base palte respectively, provides data-signal to described data line.
It should be noted that, in the embodiment of the present invention, output terminal by two switch elements of same Data Control end control is connected with two data lines in same pixel subelement on array base palte respectively, provide data-signal to described data line, on array base palte, a pixel subelement provides voltage signal by the pixel electrode of two same pixel cells of data alignment respectively.Described array base palte can be the array base palte that is used to form the liquid crystal display of TFS pattern.
Concrete, as shown in Figure 4, a data control end 10 of data drive circuit is controlled respectively two output terminals (take corresponding M1 and M2 as example), described two output terminals are connected with two data lines in a pixel subelement on array base palte respectively, and in the time that Data Control end provides data-signal to the first input end of switch element, if the first conversion and control end provides start signal to the second input end of switch element, driving circuit can provide data-signal to the wherein data line in a pixel subelement; If the second conversion and control end provides start signal to the second input end of switch element, driving circuit can provide polarity contrary data-signal to another data line in a pixel subelement.Can provide data-signal to two data lines respectively by a data control end like this, reduce the quantity of Data Control end, be conducive to data-driven IC miniaturization, reduced production cost.
Optionally, described display device also comprises: time schedule controller, described time schedule controller provides the polarity control signal of data-signal to data drive circuit.
It should be noted that, time schedule controller is the core devices that drives liquid crystal panel, its major function is to provide necessary timing control signal for gate drivers and source electrode driver in TFT-LCD (Thin Film Transistor-Liquid Crystal Display, Thin Film Transistor-LCD).LVDS (the Low Voltage Differential Signaling that it brings receiving front-end, Low Voltage Differential Signal) signal is converted into MINI-LVDS signal, drive liquid crystal panel by exporting corresponding timing control signal, make each pixel show corresponding pixel voltage.Four major control signals of time schedule controller output are respectively STV, CPV, TP, POL signal, wherein POL signal is the polarity upset signal of controlling pixel voltage, be can also provide polarity upset signal to data-driven IC by time schedule controller in the embodiment of the present invention, thereby provide opposite polarity data-signal by the first conversion and control end and the second conversion and control end to data line.
The embodiment of the present invention provides a kind of driving method of above-mentioned display device, comprising:
Sweep time interval censored data control end provide driving signal to coupled switch element;
The first conversion and control end provides start signal to coupled switch element, provides data-signal with the output terminal that makes described switch element to coupled data line;
The second conversion and control end provides start signal to coupled switch element, provides data-signal with the output terminal that makes described switch element to coupled data line.
It should be noted that, sweep time interval the first conversion and control end and the second conversion and control end can provide start signal to coupled switch element simultaneously, provide data-signal with the output terminal that makes described switch element to coupled data line; Also can be sweep time interval the first conversion and control end and the second conversion and control end provide start signal at different time intervals to coupled switch element respectively, provide data-signal with the output terminal that makes described switch element to coupled data line.
The driving signal schematic representation of data drive circuit as shown in Figure 6 for the driving circuit shown in Fig. 4 sweep time interval the first conversion and control end and the second conversion and control end providing start signal to coupled switch element simultaneously.Concrete, with reference to Fig. 4, at interval t sweep time, Data Control end 10 provides driving signal to coupled the first film transistor 101 and the second thin film transistor (TFT) 201, first sweep time sub-range t1 the first conversion and control end 21 provide start signal to coupled the first film transistor 101, the first film transistor is exported corresponding data-signal to M1.First sweep time sub-range t2 the second conversion and control end 22 provide start signal to the second coupled thin film transistor (TFT) 201 respectively, the second thin film transistor (TFT) is exported corresponding data-signal to M2.It should be noted that, in figure, export respectively high level signal as opening signal take the first conversion and control end and the second conversion and control end.
It should be noted that, at interval t sweep time, Data Control end 10 provides start signal to the 3rd coupled thin film transistor (TFT) and the 4th thin film transistor (TFT), and the present invention is only elaborated as example take above-mentioned.
The driving signal schematic representation of data drive circuit as shown in Figure 7 for the driving circuit shown in Fig. 4 sweep time interval the first conversion and control end and the second conversion and control end provide start signal at identical time interval to coupled switch element respectively.Concrete, at interval t sweep time, Data Control end 10 is to coupled the first film transistor 101 and the second film crystal, 201 provide driving signal, sweep time interval t the first conversion and control end start signal is provided, the first film transistor 101 being connected with the first conversion and control end 21 is opened, to M1 output corresponding data signal.Sweep time interval t the second conversion and control end start signal is provided, the second thin film transistor (TFT) 201 being connected with the second conversion and control end 22 is opened, and exports corresponding data-signal to M2.In Fig. 7, provide high level signal with the first conversion and control end, it is that example is elaborated that the second conversion and control end provides low level signal.
It should be noted that, at interval t sweep time, Data Control end 10 provides start signal to the 3rd coupled thin film transistor (TFT) and the 4th thin film transistor (TFT), and the present invention is only elaborated as example take above-mentioned.And the demonstration that the first conversion and control end and the second conversion and control end provide start signal can avoid the delay of signal to cause is simultaneously bad.
Optionally, the first conversion and control end provides start signal and the second conversion and control end to provide the electric weight phase isopolarity of start signal contrary, to make the data-signal of the switch element output connected with the first conversion and control end contrary with the electric weight phase isopolarity of the data-signal of the switch element output being connected with the second conversion and control end.
The electric weight phase isopolarity of the data-signal of the second thin film transistor (TFT) 201 output terminal outputs that as shown in Figure 4, the first film transistor 101 connected with the first conversion and control end 21 is connected with the second conversion and control end 22 is contrary.
The polarity control signal of data-signal optionally, can also be provided to data drive circuit by time schedule controller.Specifically provide the polarity of data-signal can the control to data drive circuit with reference to existing time schedule controller by time schedule controller control data drive circuit, here do not repeat.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. a data drive circuit, is characterized in that, comprises multiple driver elements, and wherein each driver element comprises:
The first switch element, second switch unit, the 3rd switch element and the 4th switch element; Wherein, each switch element comprises respectively first input end, the second input end and output terminal;
Two data control ends, described in one of them, Data Control end is connected with the first input end of second switch unit with the first switch element respectively, and described in another, Data Control end is connected with the first input end of the 4th switch element with the 3rd switch element respectively;
The first conversion and control end, is connected with the second input end of one of them switch element being connected with same Data Control end;
The second conversion and control end, is connected with the second input end of another switch element being connected with same Data Control end;
The output terminal of each switch element is the output terminal of described driving circuit.
2. driving circuit according to claim 1, is characterized in that, described the first switch element, second switch unit, the 3rd switch element and the 4th switch element are thin film transistor (TFT).
3. driving circuit according to claim 1, is characterized in that, the data-signal of the switch element output connected with the first conversion and control end is contrary with the electric weight phase isopolarity of the data-signal of the switch element output being connected with the second conversion and control end.
4. driving circuit according to claim 3, is characterized in that, described second switch unit is adjacent with described the 3rd switch element, and second switch unit is all connected with the first conversion and control end or the second conversion and control end with the 3rd switch element.
5. driving circuit according to claim 3, is characterized in that, described second switch unit is adjacent with described the 3rd switch element, and second switch unit is connected with the second conversion and control end with the first conversion and control end respectively with the 3rd switch element.
6. a display device, it is characterized in that, comprise the data drive circuit described in array base palte and claim 1-5 any one, many grid lines and many data lines arranged in a crossed manner on described array base palte form multiple pixel subelements, wherein, a corresponding grid line of pixel subelement and two data lines; The output terminal of four switch elements of described data drive circuit is connected with four data lines of two pixel cells adjacent on array base palte respectively, and the output terminal of two switch elements that are connected with same Data Control end is connected with two data lines in a pixel subelement on array base palte respectively, provides data-signal to described data line.
7. display device according to claim 6, is characterized in that, described display device also comprises: time schedule controller, described time schedule controller provides the polarity control signal of data-signal to data drive circuit.
8. a driving method for the display device as described in claim 6 or 7, is characterized in that, comprising:
Data Control end provides driving signal to coupled switch element;
The first conversion and control end provides start signal to coupled switch element, provides data-signal with the output terminal that makes described switch element to coupled data line;
The second conversion and control end provides start signal to coupled switch element, provides data-signal with the output terminal that makes described switch element to coupled data line.
9. driving method according to claim 8, it is characterized in that, the first conversion and control end provides start signal and the second conversion and control end to provide the electric weight phase isopolarity of start signal contrary, to make the data-signal of the switch element output connected with the first conversion and control end contrary with the electric weight phase isopolarity of the data-signal of the switch element output being connected with the second conversion and control end.
10. require the driving method described in 8 or 9 according to power, it is characterized in that, time schedule controller provides the polarity control signal of data-signal to data drive circuit.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041066.5A CN103778881B (en) | 2014-01-27 | 2014-01-27 | A kind of data drive circuit, display device and driving method thereof |
| PCT/CN2014/078708 WO2015109712A1 (en) | 2014-01-27 | 2014-05-28 | Data driving circuit, display device, and driving method therefor |
| US14/423,006 US9842552B2 (en) | 2014-01-27 | 2014-05-28 | Data driving circuit, display device and driving method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041066.5A CN103778881B (en) | 2014-01-27 | 2014-01-27 | A kind of data drive circuit, display device and driving method thereof |
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| Publication Number | Publication Date |
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| CN103778881A true CN103778881A (en) | 2014-05-07 |
| CN103778881B CN103778881B (en) | 2016-07-20 |
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| CN201410041066.5A Active CN103778881B (en) | 2014-01-27 | 2014-01-27 | A kind of data drive circuit, display device and driving method thereof |
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| Country | Link |
|---|---|
| US (1) | US9842552B2 (en) |
| CN (1) | CN103778881B (en) |
| WO (1) | WO2015109712A1 (en) |
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| WO2015109712A1 (en) * | 2014-01-27 | 2015-07-30 | 京东方科技集团股份有限公司 | Data driving circuit, display device, and driving method therefor |
| CN105047153A (en) * | 2015-08-10 | 2015-11-11 | 深圳市华星光电技术有限公司 | Driving circuit and display device |
| CN105913791A (en) * | 2016-06-24 | 2016-08-31 | 厦门天马微电子有限公司 | Display device, array substrate and driving method thereof |
| CN107393488A (en) * | 2017-08-30 | 2017-11-24 | 武汉天马微电子有限公司 | Pixel-driving circuit and image element driving method |
| WO2020029711A1 (en) * | 2018-08-08 | 2020-02-13 | Boe Technology Group Co., Ltd. | Display panel, driving method thereof, and display apparatus |
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Also Published As
| Publication number | Publication date |
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| US20160042706A1 (en) | 2016-02-11 |
| CN103778881B (en) | 2016-07-20 |
| US9842552B2 (en) | 2017-12-12 |
| WO2015109712A1 (en) | 2015-07-30 |
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